after the shooting, he left the gun range in chris kyle's ford pick-up truck. he went back to his home in lancaster. police found him, caught up with him. they had a short pursuit but put him into custody without incident. they have a long way to go on this investigation. we're in lancaster, mark schneider, back to you. >> thank you so much. lester holt has a conversation with him about his four tours in iraq. >> i searched on top of the roof. the movement made me zoom my scope in on him, figure out what hefgs doing. i saw he has an rpg. about the time i saw he was getting into attack position, i decided it was time to take the shot. >> we are going to have more of the interview at 1:30. >>> an overwhelming response this weekend to gun buyback programs across the u.s. early reports show a wide variety of weapons from handguns and sawed off shotguns to high powered assault rifles. in miami, people handed over 75 guns in exchange for gift cards or miami heat tickets. in seattle 160 guns turned in before police ran out of money. >>> now to super bowl xlvii a battl